Sign-board.



No. 643,2l9. Patented Feb. l3, I900. A. BLOCK.

SIGN BOARD.

(Application filed Jan. 26, 1898) (No Model.)

W'Qsmsses'. Rw'mimv MM 1 WZM }IM 4 lJNiTEn STATES PATENT OFFICE.

ARTHUR BLOCK, OF BERLIN, GERMANY.

SIGN-BOARD.

SPECIFICATION forming part of Letters Patent No. 643,219, dated February 13, 1900.

Application filed January 26, 1898. Serial No. 668,061. (No model.)

To aZZ whom it may concern;

Be it known that I, ARTHUR BLOCK, a subject of the Emperor of Germany, and a resident of Berlin, Germany, have invented certain new and useful Improvements in Sign- Boards, of which the following is a full, clear, and exact description.

The present invention consists of a sign or sign-board with interchangeable letters, and in order to render the present specification more easilyintelligible reference is had to the accompanying drawings, in which similar letters of reference denote similar parts throughout both views.

Figure 1 is a front elevation, and Fig. 2 an end elevation, of a sign-board constructed according to the present invention.

In sign-boards of this class hitherto known it has often been necessary to remove a number of letters in order to take out and replace a single letter in the middle of the sign. According to the present invention each letter may be separately removed without interfering with the others.

The device consists of a corrugated ground plate or base a, forming a backing, having a series of perforations through the ribs formed by the corrugations, said perforations being in planes at right angles to said corrugations. The letters 0 are provided with stems d, having eyes therein through which the rods or bars I) pass, thus securely holding the letters in place. The letters may be arranged in any desired positions, as diagonally, in circular form, or otherwise. rods or bars may be arranged as close together as desired.

Having now particularly described and ascertained the nature of my said appliance and in what manner the same is to be carried into practice, I declare that what I claim is A sign-board having corrugated faces, the ribs of which are perforated, rods passing transversely through said perforations in the ribs, and letters having perforated stems adapted to be detachably secured to said rods, substantially as set forth.

In testimony whereof I have signed my name tothis specification in the presence of two subscribing witnesses.

ARTHUR BLOCK.

Witnesses:

CHAS. H. DAY, HENRY HASPER.

The holes for the I. 

